gcc/config/sol2.h

   1 /* Operating system specific defines to be used when targeting GCC for any
   2    Solaris 2 system.
   3    Copyright (C) 2002-2017 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 /* We are compiling for Solaris 2 now.  */
  22 #define TARGET_SOLARIS 1
  23
  24 /* wchar_t is called differently in <wchar.h> for 32 and 64-bit
  25    compilations.  This is called for by SCD 2.4.1, p. 6-83, Figure 6-65
  26    (32-bit) and p. 6P-10, Figure 6.38 (64-bit).  */
  27
  28 #undef WCHAR_TYPE
  29 #define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int")
  30
  31 #undef WCHAR_TYPE_SIZE
  32 #define WCHAR_TYPE_SIZE 32
  33
  34 /* Same for wint_t.  See SCD 2.4.1, p. 6-83, Figure 6-66 (32-bit).  There's
  35    no corresponding 64-bit definition, but this is what Solaris 8
  36    <iso/wchar_iso.h> uses.  */
  37
  38 #undef WINT_TYPE
  39 #define WINT_TYPE (TARGET_64BIT ? "int" : "long int")
  40
  41 #undef WINT_TYPE_SIZE
  42 #define WINT_TYPE_SIZE 32
  43
  44 #define SIG_ATOMIC_TYPE "int"
  45
  46 /* ??? This definition of int8_t follows the system header but does
  47    not conform to C99.  Likewise int_fast8_t, int_least8_t.  */
  48 #define INT8_TYPE "char"
  49 #define INT16_TYPE "short int"
  50 #define INT32_TYPE "int"
  51 #define INT64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  52 #define UINT8_TYPE "unsigned char"
  53 #define UINT16_TYPE "short unsigned int"
  54 #define UINT32_TYPE "unsigned int"
  55 #define UINT64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  56
  57 #define INT_LEAST8_TYPE "char"
  58 #define INT_LEAST16_TYPE "short int"
  59 #define INT_LEAST32_TYPE "int"
  60 #define INT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  61 #define UINT_LEAST8_TYPE "unsigned char"
  62 #define UINT_LEAST16_TYPE "short unsigned int"
  63 #define UINT_LEAST32_TYPE "unsigned int"
  64 #define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  65
  66 #define INT_FAST8_TYPE "char"
  67 #define INT_FAST16_TYPE "int"
  68 #define INT_FAST32_TYPE "int"
  69 #define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  70 #define UINT_FAST8_TYPE "unsigned char"
  71 #define UINT_FAST16_TYPE "unsigned int"
  72 #define UINT_FAST32_TYPE "unsigned int"
  73 #define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  74
  75 #define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
  76 #define UINTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
  77
  78 #undef CPP_SUBTARGET_SPEC
  79 #define CPP_SUBTARGET_SPEC "\
  80 %{pthreads|pthread:-D_REENTRANT -D_PTHREADS}"
  81
  82 /* Names to predefine in the preprocessor for this target machine.  */
  83 #define TARGET_SUB_OS_CPP_BUILTINS()
  84 #define TARGET_OS_CPP_BUILTINS()                        \
  85   do {                                                  \
  86     builtin_define_std ("unix");                        \
  87     builtin_define_std ("sun");                         \
  88     builtin_define ("__svr4__");                        \
  89     builtin_define ("__SVR4");                          \
  90     builtin_assert ("system=unix");                     \
  91     builtin_assert ("system=svr4");                     \
  92     /* For C++ we need to add some additional macro     \
  93        definitions required by the C++ standard         \
  94        library.  */                                     \
  95     if (c_dialect_cxx ())                               \
  96       {                                                 \
  97         switch (cxx_dialect)                            \
  98           {                                             \
  99           case cxx98:                                   \
 100           case cxx11:                                   \
 101           case cxx14:                                   \
 102             /* C++11 and C++14 are based on C99.        \
 103                libstdc++ makes use of C99 features      \
 104                even for C++98.  */                      \
 105             builtin_define ("__STDC_VERSION__=199901L");\
 106             break;                                      \
 107                                                         \
 108           default:                                      \
 109             /* C++17 is based on C11.  */               \
 110             builtin_define ("__STDC_VERSION__=201112L");\
 111             break;                                      \
 112           }                                             \
 113         builtin_define ("_XOPEN_SOURCE=600");           \
 114         builtin_define ("_LARGEFILE_SOURCE=1");         \
 115         builtin_define ("_LARGEFILE64_SOURCE=1");       \
 116         builtin_define ("__EXTENSIONS__");              \
 117       }                                                 \
 118     TARGET_SUB_OS_CPP_BUILTINS();                       \
 119   } while (0)
 120
 121 #define SUBTARGET_OVERRIDE_OPTIONS                      \
 122   do {                                                  \
 123     solaris_override_options ();                        \
 124   } while (0)
 125
 126 #if DEFAULT_ARCH32_P
 127 #define MULTILIB_DEFAULTS { "m32" }
 128 #else
 129 #define MULTILIB_DEFAULTS { "m64" }
 130 #endif
 131
 132 #if DEFAULT_ARCH32_P
 133 #define DEF_ARCH32_SPEC(__str) "%{!m64:" __str "}"
 134 #define DEF_ARCH64_SPEC(__str) "%{m64:" __str "}"
 135 #else
 136 #define DEF_ARCH32_SPEC(__str) "%{m32:" __str "}"
 137 #define DEF_ARCH64_SPEC(__str) "%{!m32:" __str "}"
 138 #endif
 139
 140 /* It's safe to pass -s always, even if -g is not used.  Those options are
 141    handled by both Sun as and GNU as.  */
 142 #define ASM_SPEC_BASE \
 143 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{Ym,*} -s %(asm_cpu)"
 144
 145 #define ASM_PIC_SPEC " %{" FPIE_OR_FPIC_SPEC ":-K PIC}"
 146
 147 #undef ASM_CPU_DEFAULT_SPEC
 148 #define ASM_CPU_DEFAULT_SPEC \
 149 (DEFAULT_ARCH32_P ? "\
 150 %{m64:" ASM_CPU64_DEFAULT_SPEC "} \
 151 %{!m64:" ASM_CPU32_DEFAULT_SPEC "} \
 152 " : "\
 153 %{m32:" ASM_CPU32_DEFAULT_SPEC "} \
 154 %{!m32:" ASM_CPU64_DEFAULT_SPEC "} \
 155 ")
 156
 157 #undef LIB_SPEC
 158 #define LIB_SPEC \
 159   "%{!symbolic:\
 160      %{pthreads|pthread:-lpthread} \
 161      %{p|pg:-ldl} -lc}"
 162
 163 #ifndef CROSS_DIRECTORY_STRUCTURE
 164 #undef MD_EXEC_PREFIX
 165 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
 166 #endif
 167
 168 /* Enable constructor priorities if the configured linker supports it.  */
 169 #undef SUPPORTS_INIT_PRIORITY
 170 #define SUPPORTS_INIT_PRIORITY HAVE_INITFINI_ARRAY_SUPPORT
 171
 172 #undef STARTFILE_ARCH_SPEC
 173 #define STARTFILE_ARCH_SPEC "%{ansi:values-Xc.o%s} \
 174                             %{!ansi:values-Xa.o%s}"
 175
 176 #if defined(HAVE_LD_PIE) && defined(HAVE_SOLARIS_CRTS)
 177 #define STARTFILE_CRTBEGIN_SPEC "%{shared:crtbeginS.o%s} \
 178                                  %{" PIE_SPEC ":crtbeginS.o%s} \
 179                                  %{" NO_PIE_SPEC ":crtbegin.o%s}"
 180 #else
 181 #define STARTFILE_CRTBEGIN_SPEC "crtbegin.o%s"
 182 #endif
 183
 184 #if ENABLE_VTABLE_VERIFY
 185 #if SUPPORTS_INIT_PRIORITY
 186 #define STARTFILE_VTV_SPEC \
 187   "%{fvtable-verify=none:%s; \
 188      fvtable-verify=preinit:vtv_start_preinit.o%s; \
 189      fvtable-verify=std:vtv_start.o%s}"
 190 #define ENDFILE_VTV_SPEC \
 191   "%{fvtable-verify=none:%s; \
 192      fvtable-verify=preinit:vtv_end_preinit.o%s; \
 193      fvtable-verify=std:vtv_end.o%s}"
 194 #else /* !SUPPORTS_INIT_PRIORITY */
 195 #define STARTFILE_VTV_SPEC \
 196   "%{fvtable-verify=*: \
 197      %e-fvtable-verify=%* is not supported in this configuration}"
 198 #define ENDFILE_VTV_SPEC ""
 199 #endif /* !SUPPORTS_INIT_PRIORITY */
 200 #else /* !ENABLE_VTABLE_VERIFY */
 201 #define STARTFILE_VTV_SPEC ""
 202 #define ENDFILE_VTV_SPEC ""
 203 #endif /* !ENABLE_VTABLE_VERIFY */
 204
 205 /* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.  */
 206 #undef STARTFILE_SPEC
 207 #ifdef HAVE_SOLARIS_CRTS
 208 /* Since Solaris 11.x and Solaris 12, the OS delivers crt1.o, crti.o, and
 209    crtn.o, with a hook for compiler-dependent stuff like profile handling.  */
 210 #define STARTFILE_SPEC "%{!shared:%{!symbolic: \
 211                           crt1.o%s \
 212                           %{p:%e-p is not supported; \
 213                             pg:crtpg.o%s gmon.o%s; \
 214                               :crtp.o%s}}} \
 215                         crti.o%s %(startfile_arch) %(startfile_crtbegin) \
 216                         %(startfile_vtv)"
 217 #else
 218 #define STARTFILE_SPEC "%{!shared:%{!symbolic: \
 219                           %{p:mcrt1.o%s; \
 220                             pg:gcrt1.o%s gmon.o%s; \
 221                               :crt1.o%s}}} \
 222                         crti.o%s %(startfile_arch) %(startfile_crtbegin) \
 223                         %(startfile_vtv)"
 224 #endif
 225
 226 #if defined(HAVE_LD_PIE) && defined(HAVE_SOLARIS_CRTS)
 227 #define ENDFILE_CRTEND_SPEC "%{shared:crtendS.o%s;: \
 228                                %{" PIE_SPEC ":crtendS.o%s} \
 229                                %{" NO_PIE_SPEC ":crtend.o%s}}"
 230 #else
 231 #define ENDFILE_CRTEND_SPEC "crtend.o%s"
 232 #endif
 233
 234 #undef  ENDFILE_SPEC
 235 #define ENDFILE_SPEC \
 236   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 237    %(endfile_arch) %(endfile_vtv) %(endfile_crtend) crtn.o%s"
 238
 239 #undef LINK_ARCH32_SPEC_BASE
 240 #define LINK_ARCH32_SPEC_BASE \
 241   "%{G:-G} \
 242    %{YP,*} \
 243    %{R*} \
 244    %{!YP,*:%{p|pg:-Y P,%R/usr/lib/libp%R/lib:%R/usr/lib} \
 245            %{!p:%{!pg:-Y P,%R/lib:%R/usr/lib}}}"
 246
 247 #undef LINK_ARCH32_SPEC
 248 #define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE
 249
 250 /* This should be the same as LINK_ARCH32_SPEC_BASE, except with
 251    ARCH64_SUBDIR appended to the paths.  */
 252 #undef LINK_ARCH64_SPEC_BASE
 253 #define LINK_ARCH64_SPEC_BASE \
 254   "%{G:-G} \
 255    %{YP,*} \
 256    %{R*} \
 257    %{!YP,*:%{p|pg:-Y P,%R/usr/lib/libp/" ARCH64_SUBDIR ":%R/lib/" ARCH64_SUBDIR ":%R/usr/lib/" ARCH64_SUBDIR "} \
 258            %{!p:%{!pg:-Y P,%R/lib/" ARCH64_SUBDIR ":%R/usr/lib/" ARCH64_SUBDIR "}}}"
 259
 260 #undef LINK_ARCH64_SPEC
 261 #ifndef USE_GLD
 262 /* FIXME: Used to be SPARC-only.  Not SPARC-specfic but for the model name!  */
 263 #define LINK_ARCH64_SPEC \
 264   "%{mcmodel=medlow:-M /usr/lib/ld/" ARCH64_SUBDIR "/map.below4G} " \
 265   LINK_ARCH64_SPEC_BASE
 266 #else
 267 #define LINK_ARCH64_SPEC LINK_ARCH64_SPEC_BASE
 268 #endif
 269
 270 #ifdef USE_GLD
 271 #if DEFAULT_ARCH32_P
 272 #define ARCH_DEFAULT_EMULATION ARCH32_EMULATION
 273 #else
 274 #define ARCH_DEFAULT_EMULATION ARCH64_EMULATION
 275 #endif
 276 #define TARGET_LD_EMULATION "%{m32:-m " ARCH32_EMULATION "}" \
 277                             "%{m64:-m " ARCH64_EMULATION "}" \
 278                             "%{!m32:%{!m64:-m " ARCH_DEFAULT_EMULATION "}} "
 279 #else
 280 #define TARGET_LD_EMULATION ""
 281 #endif
 282
 283 #undef LINK_ARCH_SPEC
 284 #if DISABLE_MULTILIB
 285 #if DEFAULT_ARCH32_P
 286 #define LINK_ARCH_SPEC TARGET_LD_EMULATION " \
 287 %{m32:%(link_arch32)} \
 288 %{m64:%edoes not support multilib} \
 289 %{!m32:%{!m64:%(link_arch_default)}} \
 290 "
 291 #else
 292 #define LINK_ARCH_SPEC TARGET_LD_EMULATION " \
 293 %{m32:%edoes not support multilib} \
 294 %{m64:%(link_arch64)} \
 295 %{!m32:%{!m64:%(link_arch_default)}} \
 296 "
 297 #endif
 298 #else
 299 #define LINK_ARCH_SPEC TARGET_LD_EMULATION " \
 300 %{m32:%(link_arch32)} \
 301 %{m64:%(link_arch64)} \
 302 %{!m32:%{!m64:%(link_arch_default)}}"
 303 #endif
 304
 305 #define LINK_ARCH_DEFAULT_SPEC \
 306 (DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC)
 307
 308 #undef SUBTARGET_EXTRA_SPECS
 309 #define SUBTARGET_EXTRA_SPECS \
 310   { "startfile_arch",           STARTFILE_ARCH_SPEC },          \
 311   { "startfile_crtbegin",       STARTFILE_CRTBEGIN_SPEC },      \
 312   { "startfile_vtv",            STARTFILE_VTV_SPEC },           \
 313   { "link_arch32",              LINK_ARCH32_SPEC },             \
 314   { "link_arch64",              LINK_ARCH64_SPEC },             \
 315   { "link_arch_default",        LINK_ARCH_DEFAULT_SPEC },       \
 316   { "link_arch",                LINK_ARCH_SPEC },               \
 317   { "endfile_arch",             ENDFILE_ARCH_SPEC },            \
 318   { "endfile_crtend",           ENDFILE_CRTEND_SPEC },          \
 319   { "endfile_vtv",              ENDFILE_VTV_SPEC },             \
 320   SUBTARGET_CPU_EXTRA_SPECS
 321
 322 /* C++11 programs need -lrt for nanosleep.  */
 323 #define TIME_LIBRARY "rt"
 324
 325 #ifndef USE_GLD
 326 /* With Sun ld, -rdynamic is a no-op.  */
 327 #define RDYNAMIC_SPEC ""
 328 #else
 329 /* GNU ld needs --export-dynamic to implement -rdynamic.  */
 330 #define RDYNAMIC_SPEC "--export-dynamic"
 331 #endif
 332
 333 #ifndef USE_GLD
 334 /* With Sun ld, use mapfile to enforce direct binding to libgcc_s unwinder.  */
 335 #define LINK_LIBGCC_MAPFILE_SPEC \
 336   "%{shared|shared-libgcc:-M %slibgcc-unwind.map}"
 337 #else
 338 /* GNU ld doesn't support direct binding.  */
 339 #define LINK_LIBGCC_MAPFILE_SPEC ""
 340 #endif
 341
 342 /* Clear hardware capabilities, either explicitly or with OpenMP:
 343    #pragma openmp declare simd creates clones for SSE2, AVX, and AVX2.  */
 344 #ifdef HAVE_LD_CLEARCAP
 345 #define LINK_CLEARCAP_SPEC " %{mclear-hwcap|fopenmp*:-M %sclearcap.map}"
 346 #else
 347 #define LINK_CLEARCAP_SPEC ""
 348 #endif
 349
 350 #undef  LINK_SPEC
 351 #define LINK_SPEC \
 352   "%{h*} %{v:-V} \
 353    %{!shared:%{!static:%{rdynamic: " RDYNAMIC_SPEC "}}} \
 354    %{static:-dn -Bstatic} \
 355    %{shared:-G -dy %{!mimpure-text:-z text}} " \
 356    LINK_LIBGCC_MAPFILE_SPEC LINK_CLEARCAP_SPEC " \
 357    %{symbolic:-Bsymbolic -G -dy -z text} \
 358    %(link_arch) \
 359    %{Qy:} %{!Qn:-Qy}"
 360
 361 /* Use --as-needed/-z ignore -lgcc_s for eh support.  */
 362 #ifdef HAVE_LD_AS_NEEDED
 363 #define USE_LD_AS_NEEDED 1
 364 #endif
 365
 366 #ifdef USE_GLD
 367 /* Solaris 11 build 135+ implements dl_iterate_phdr.  GNU ld needs
 368    --eh-frame-hdr to create the required .eh_frame_hdr sections.  */
 369 #if defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
 370 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
 371 #endif /* HAVE_LD_EH_FRAME && TARGET_DL_ITERATE_PHDR */
 372 #endif
 373
 374 #if defined(HAVE_LD_PIE) && defined(HAVE_SOLARIS_CRTS)
 375 #ifdef USE_GLD
 376 /* Assert -z text by default to match Solaris ld.  */
 377 #define LD_PIE_SPEC "-pie %{!mimpure-text:-z text}"
 378 #else
 379 /* Solaris ld needs -z type=pie instead of -pie.  */
 380 #define LD_PIE_SPEC "-z type=pie %{mimpure-text:-z textoff}"
 381 #endif
 382 #else
 383 /* Error out if some part of PIE support is missing.  */
 384 #define LINK_PIE_SPEC \
 385   "%{no-pie:} %{pie:%e-pie is not supported in this configuration} "
 386 #endif
 387
 388 /* collect2.c can only parse GNU nm -n output.  Solaris nm needs -png to
 389    produce the same format.  */
 390 #define NM_FLAGS "-png"
 391 \f
 392 /* The system headers under Solaris 2 are C++-aware since 2.0.  */
 393 #define NO_IMPLICIT_EXTERN_C
 394
 395 #define STDC_0_IN_SYSTEM_HEADERS 1
 396
 397 /* Support Solaris-specific format checking for cmn_err.  */
 398 #define TARGET_N_FORMAT_TYPES 1
 399 #define TARGET_FORMAT_TYPES solaris_format_types
 400
 401 /* #pragma init and #pragma fini are implemented on top of init and
 402    fini attributes.  */
 403 #define SOLARIS_ATTRIBUTE_TABLE                                         \
 404   { "init",      0, 0, true,  false,  false, NULL, false },             \
 405   { "fini",      0, 0, true,  false,  false, NULL, false }
 406
 407 /* Solaris-specific #pragmas are implemented on top of attributes.  Hook in
 408    the bits from config/sol2.c.  */
 409 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
 410 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
 411
 412 /* Allow macro expansion in #pragma pack.  */
 413 #define HANDLE_PRAGMA_PACK_WITH_EXPANSION
 414
 415 #define TARGET_CXX_DECL_MANGLING_CONTEXT solaris_cxx_decl_mangling_context
 416
 417 /* Solaris/x86 as and gas support unquoted section names.  */
 418 #ifndef SECTION_NAME_FORMAT
 419 #define SECTION_NAME_FORMAT     "%s"
 420 #endif
 421
 422 /* This is how to declare the size of a function.  For Solaris, we output
 423    any .init or .fini entries here.  */
 424 #undef ASM_DECLARE_FUNCTION_SIZE
 425 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)            \
 426   do                                                            \
 427     {                                                           \
 428       if (!flag_inhibit_size_directive)                         \
 429         ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                 \
 430       solaris_output_init_fini (FILE, DECL);                    \
 431     }                                                           \
 432   while (0)
 433
 434 #ifndef USE_GAS
 435 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 436 #define TARGET_ASM_ASSEMBLE_VISIBILITY solaris_assemble_visibility
 437
 438 #define AS_NEEDS_DASH_FOR_PIPED_INPUT
 439
 440 /* The Solaris assembler cannot grok .stabd directives.  */
 441 #undef NO_DBX_BNSYM_ENSYM
 442 #define NO_DBX_BNSYM_ENSYM 1
 443 #endif
 444
 445 /* Solaris has an implementation of __enable_execute_stack.  */
 446 #define HAVE_ENABLE_EXECUTE_STACK
 447
 448 /* Static stack checking is supported by means of probes.  */
 449 #define STACK_CHECK_STATIC_BUILTIN 1
 450
 451 #define TARGET_POSIX_IO
 452
 453 /* Solaris 10 has the float and long double forms of math functions.
 454    We redefine this hook so the version from elfos.h header won't be used.  */
 455 #undef TARGET_LIBC_HAS_FUNCTION
 456 #define TARGET_LIBC_HAS_FUNCTION default_libc_has_function
 457
 458 extern GTY(()) tree solaris_pending_aligns;
 459 extern GTY(()) tree solaris_pending_inits;
 460 extern GTY(()) tree solaris_pending_finis;